William b



(No Model.)

W. B. BOAZ. TRIMMING MACHINE No. 456,879. Patented July 28,1891;

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UNITED STATES PATENT OFFICE.

YVILLIAM B. BOAZ, F HAMILTON, OHIO, ASSIGNOR OF ONE'HALF TO F. & L. KAHN& BROTHERS, OF SAME PLACE.

TRlMMlNG-MACHINE.

sencmrcarron forming part of Letters Patent No. 456,879, dated July28,1891. Application filed January 12, 1891. Serial No. 377,561. (Nomodel.)

To a, 1072,0722, it may concern: cutter having a flat front face andhaving a Be it known that I, W'ILLIAM B. BOAZ, of bevel upon its rearface to produce an acute Hamilton, Butler county, ()hio, have inventedperipheral cutting-edge, the lower portion of certain new and usefulImprovements in Trimthis cutter projecting below the upper surface 5 5ming-Machines, of which the following is a of the bed-plate, while theflat face of thecutspecification. ter comes against or very near to the,rear

This invention pertains to improvements edge of the bed-plate; 9, a gearon the cutterinthat class of trimming-machines employed spindle, gearingwith the rack on the guides; by pattern-makers and other wood-workers10, a handle or crank on the rear end of the 60 IO in trimming miters,butt-joints, and other spindle, by means of which the spindle and edgesof pieces of wood by handpower operacutter and gear may be rotated; 11,a ratchet tions. or notched disk fast on the rear end of the Myimprovements will be readily underspindle; 12, the arm to which thehandle stood from the following description, taken in is attached, theinner end of this arm or 65' connection with the accompanying drawings,tongue engaging any selected notch in the in whichdisk 11; 13, the bodyof the hand-1ever or Figurel is a vertical transverse section of a crankfreely journaled on the spindle andmachineexemplifyingmyimprovements;Fig. forming a housing for thehandle-tongue 12,

2, a front elevation of the same; Fig. 3, a rear which tongue is capableof sliding a trifle rawe elevation of the same, or about half the lengthdially in the crank-body l3; and 14, a spring of the machine; and Fig.-Il:, a plan showing housed in the crank-body and tending to press abouthalf the length of the machine, the the tongue 12 inwardly, so that itspoint will hand-lever or crank being omitted from the engage one of thenotches of the ratchet-disk. last-mentioned view. By turning the crankthe cutter will be ro- 25 In the drawings, 1 indicates the bed-plate,tated, and at the same time the pinion will having a true flat topsurface and a straight cause the cutter to be moved along the bedrearedge; 2, a lower guide member disposed plate toward one end of themachine. The to the rear of the bed-plate and parallel with cutter,therefore, has a movement of rotation its rear edge; 3, bracketsprojecting forwardly and advance, the periphery of the cutter hav- 30from the guide member and bolted to the beding a rotary movement athigher speed than plate, as indicated in Fig. i, so that the guide itsmovement of advance. A piece of wood member can be adjusted to and fromand laid upon the bed-plate against one of the parallel with the rearedge of the bed-plate brackets and projecting a trifle to the rear ofand then firmly secured; 4, a top guide memthe bed-plate in advance ofthe cutter be- 3 5 her disposed over the lower guide member comessubjected to the action of the rotating and bolted thereto at its ends,the guiding and advancing cutter and slices may be elements beingillustrated as of V shaped shaved off of the wood. The action of thecutbearing-section; 5, a cross-head fitted to slide ter is that of aknife-edged toothless saw, the in the guides endwise of the bed-plate,the advance of the cutter serving to feed it along 4o bolting of the topguide member to the lower as the cutting progresses. The work done isone permitting the guideway to be adjusted extremely smooth and freefrom all splinterto a proper fit upon the cross-head as wear ing, andthe machine has a capacity for taktakes place, the cross-headcarryingabearing ing surprisingly heavy cuts with smooth rehaving ahorizontal axis above the top sursults.

45 face of the bed-plate and parallel with that It is usual in machinesof this general class surface and at right angles to the plane of toprovide the bedplate with one or more the rear edge of the bed-plate; 6,a spindle fences, against which the wood maybe placed journaled in thiscross-head bearing; 7, a rack instead of against the end brackets, asabove formed upon the lower guide element, with its mentioned, suchfences being adjustable to 5c teeth projecting upwardly; S, adisk-cutter sevarious angles for mitering, &c. Such fences cured tothefront end of this spindle, this may, if desired, be employed inconnection member.

with my machine, as indicated in dotted line at 15 in Fig. 4..

For convenience in operation it is desirable that the crank projectupwardly within convenient reach of the operators hand. The generalposition of the crank would be controlled by the width of the piece ofwood being operated upon. In order that the position of the crank may ina general way be fixed independent of the width of the work, I arrangethe crank to be adjusted around the spindle. This is done by shiftingthe tongue 12 into a selected notch in the disk 11 in an obvious manner.Wear of the cross-head in the guides is compensated for by readjustingthe upper guide member where it is secured by bolts to the structure ofthe lower guide The guide is adjusted into parallelisrn with the bedplate by shifting the brackets on the bed-plate. I

I claim as my invention In a trimming-machine, the combination,substantially as set forth, of a bed-plate, a guidewayand rack paralleltherewith, a crosshead fitting said guide and having abearing, a spindlejournaled in said cross-head bearing, a disk-cutter secured to saidspindle and having a fiat front face and acutely-beveled peripheryprojecting below and against the edge of said bed-plate, a gearconnected with said spindle and engaging said rack, and a hand-crankconnected with said spindle.

ILLIAM B. BOAZ.

NVitnesses:

.T. W. SEE, WM. S. GIFFIN.

